../ dmsp_15_ephemeris_20201126.txt 22-Jun-2023 00:45 109408 dmsp_16_ephemeris_20201126.txt 22-Jun-2023 00:45 109363 dmsp_17_ephemeris_20201126.txt 22-Jun-2023 00:45 109309 dmsp_18_ephemeris_20201126.txt 22-Jun-2023 00:45 109333